Search for the "MLB Bandits"

The FBI continued the search Monday for a pair of serial bank robbers nicknamed the "MLB bandits" for wearing baseball caps during their holdups.The thieves, who also wear sunglasses during the heists, have now hit at least 12 banks across the Delaware Valley over the past three weeks.

The most recent case was this past Saturday when they held up a Commerce Bank on Upper Silver Lake Road in Newtown, Bucks County.

"He entered into the building with a note indicating that he had a gun, and made off with approximately $2,400 in cash," said Sgt. Steven Meyers of the Newtown Twp. Police Department.

There's also a report of these men being involved in a failed robbery because of a very astute teller.

It happened last week at the Bank of America in Croydon.

The teller quickly became suspicious of the man approaching her with a Phillies hat and sunglasses, so she ordered him to remove the shades.

"She refused to give him service until he removed his sunglasses. The subject then walked out of the bank," said Lt. Charles McGuigan of the Bristol Twp. Police Department.

The man left without incident, but later that same day a person matching his description robbed another bank in Bensalem.

Even though these men claim to be carrying a gun, no witnesses have reported seeing a weapon used during these crimes.

Still, investigators say the MLB bank robbers should be considered armed and dangerous.

If you recognize the men, you're asked to call the FBI at (215) 418-4000 or your local police.